📖 what
What is the heliopause?
Quick Answer
The heliopause is the boundary where the Sun’s solar wind is stopped by interstellar space. It marks the outer edge of the heliosphere.
The Full Story
The heliopause is the point where the outward pressure of the solar wind balances the pressure from the interstellar medium. It is not a sharp wall but a transition region at the edge of the Sun’s influence. Spacecraft data from Voyager 1 and Voyager 2 showed that conditions changed dramatically when each probe crossed this boundary. Crossing the heliopause is often described as entering interstellar space, though the Voyagers are still in the Milky Way galaxy.
Key Facts
1.Voyager 1 crossed it in 2012
2.Voyager 2 crossed it in 2018
3.It marks the edge of the heliosphere
YouTube Angle
Suggested video title for this topic:
"Where the Sun’s realm ends and interstellar space begins"
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